product model: sp-lfp-200aha, nominal capacity: 200ah, nominal voltage: 3.2v, weight: 5.8kg, ac impedance: less than 0.4 ohm. cycle life: over 2000 times, 80%dod, capacity retention over 80%. self-discharge rate: less than 5%. dimension: 280x180x69mm, standard charge/discharge current: 66a. wide temperature range: stable and reliable performance, it can be fully charged and discharged in a wide temperature range of -20°c ~ +55°c. longer working time with high performance, outstanding discharge properties, small internal resistance, no memory effect, good discharge ability, high load and resist high temperature. solar batteries lifepo4 material battery is safe than licoo2 and limn2o4 for it's stable structure can be kept very well under continuous charging and discharging situations..syi